Calculating device



Jan. 4, 1927.

8 @4 APR MAY JUN JLY AUG SEP OCT NOV DEC JAN J. E. WRIGHT CALCULATING DEVICE Filed Oct. 51 1925 8L7 I6 I fi m THOU

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Patented Jan. 4, 1927.

PATENT OFFICE.

JOHN E. WRIGHT, OF MAYFIELD, KENTUCKY.

CALCULATING DEVICE.

Application filed October 31, 1925.

This invention relates to a flexible band or web, adapted to be wound upon a cylinder, roller, spool or the like, and bearing integrations that are so arranged that read ings may be taken therefrom with reference to the integrations borne by another member or members.

In a co-pending application, filed coincidentally herewith, Serial No. 66,021, I have described and claimed a calculator for use with which the improved form of integration table referred to herein is especially adapted, but from the following description it will be manifest that use of my present invention is not limited to any particular mechanism or mechanisms.

The principal objects of this invention are to provide a form of integration table or chart, in which (a) The integrations shall be borne upon a web, band or strip of flexible material, adapted for winding or spooling upon a rotatable member or members;

(6) The integrations shall be arranged, in progressive series or otherwise, lJOth' longitudinally and transversely of the web;

(0) The transverse rows of integrations may each have two or more different but related integration characters in each of a plurality of separate longitudinal columns;

(01) The integrations on the web shall be arranged with specific reference to integrations borne by one or more other movable members; and

(c) The longitudinal rows of integrations shall be arranged in progressive groups transversely of the web.

The means by which the foregoing and other objects are accomplished by my invention, and the manner of their accompli'shinent. readily will be understood from the following description on reference to the accompanying drawings, in which-- Fig. 1 is a top plan view of a preferred form of my improved web type of integration table,

Fig. 2 is a side elevation showing a typical way of arranging the web for winding upon rotatable members, the larger of said members being partly broken away.

Fig. 3 is a top plan view of a typical form of rotatable members bearing integrations Serial No. 66,020.

to which the integrations on the web refer.

Fig. 4 is a top plan view of a typical form of table for identifying the groups of longitudinal columns on the web, and the units of each group.

Having reference to the drawings, the web 5 may be made of paper, cloth, or other suitable flexible material, which preferably should have considerable tensile strength, be so tough as not to be torn or frayed when used in the intended manner, be comparatively inelastic, have a low factor of expansion and contraction under atmospheric and temperature variations, and have a smooth, wear-resisting surface. Said web may be arranged in any desired manner for winding upon, or otherwise being moved by, a rotatable member or members, but in Fig. 2 of the drawings, I have shown it as used in the improved form of calculator referred to in my said co-pending application, in which one end of the web is secured to, and adapted for winding upon a roller 6, while its other end is similarly arranged with reference to a rotatable cylinder 7. Two cooperating discs 8 and 9 respectively each bearing integrations, furnish data for the selection of the readings to be taken from the integrations on the web 5, provision preferably being made for rotating said discs by rotation of roller 6 or cylinder 7, or vice versa. A stationary table, having ordinates separated into groups which preferably are arranged progressively, as by having dollars, tens, hundreds and thousands groups, a portion only of the dollars group 10, hundreds group 11, and thousands group 1.2, being shown, is intended to be placed in position to identify the groups and individual columns of integrations on the web 5.

Said web is provided with a series of transverse parallel lines '13. and a series of longitudinal. lines 14, the lines of each of said series preferably being arranged symmetrically, so that a plurality of similar rectangular spaces are defined by said lines. In each of a plurality of'the transverse rows of such spaces, two or more different but related integrations are inscribed, and means is provided for identifying each thereof, as

by placing identifying characters in spaces 15 and 16 which may appear in series not shown, upon the web, or upon some suitable part of the mechanism with which the web is used.

The discs 8 and 9 have their peripheries or other exposed surfaces divided into spaces, as by lines 17 and 18 respectively, in which spaces the integration characters are placed.

As indi -ated near the top of Fig. 1, more than one series of integrations may be arranged longitudinally of the web, each series preferably starting with a transverse line 19 of zero spaces, and preferably having associated therewith identi'li'ying characters appearing in spaces 20 and 21, which may be inscribed in series (not shown) upon the 'web, may be located at a different part of the calculator from the spaces 15 and 16, or may be combined with said spaces.

As an example of the use of my improved integration table, let it be assumed that it is to be used for calculating interest. The discs 8 and v9 would have their respective peripheries divided into one or more series arranged according to the months of a year, and one or more series of numbers from 1 to 30. The spaces 15 and 16 would have different rates of interest, such for example as 6 per cent and 8 per cent, noted therein, and in the spaces 20 and 21 other different rates of interest, such as l% and 5%, would appear. The table of series for dollars, tens. lnur dreds, and thousands would be placed in position for the d' 'isions thereof to register with the longitudinal columns of spaces on the web. In the transverse rows of spaces shown in the lower part of Fig. 1., there would be placed figures indicating the amounts of interest, a 6% and 8% respectively, on sums starting with one dollar, and increasing from the right-hand side of the web to its left-hand side in conformity with a stationar table such as shown in Fig. 1i. The integrations in each of the longitudinal columns of spaces would show the amounts of interest on the sums, and at the rates, delined in the manner just described, for periods of time starting with one day. and advancing one day for each row of transverse spaces. Starting with the transverse row of zero spaces shown near the top of Fig. 1, integrations would be similarly arranged upon the web, for the rates of interest noted in the spaces 20 and 21. such as t")? and 5%.

The foregoing description of a manner of arranging the integrations for use of the web in computing interest. ..,iven merely as an illustrative example, and is not intended to indicate that my improved integration table is limited to th s or any other specific sort of computations, since manifestly the integration characters are susceptible of wide variations to adapt them for various calcu lations or forms of calculating mechanism, without departing from the intended scope of my invention.

Various modifications of minor details oi my improved calculating device will doubtless suggest then'iselvcs to those skilled in this art, and I therefore do not desire to limit my invention to the specific matter shown and described herein.

Having now fully described the invention, what is claimed is:

l. An integration table for use with calculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member, said web bearing integrations arranged in series both longitudinally and transversely thereof. and referring to a plurality of interdependent movable integrations at one side of said web.

2. An integration table for use with 'alculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member, said web bearing integrations arranged in series both longitudinally and transversely thereof, and referring to a plurality of interdependent, circumferential integrations at one side of said web.

3. An integration table for use with calculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member, said web bearing integrations arranged in series both longitudinally and transversely thereof and referring to a plurality of different but interdependent integration tables at opposite sides of said web.

4. An integration table for use with. calculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member, saio web bearing integrations arranged in series both longitiulinallv and transversely thereof, and referring to a stationary integration table at one side of said web, and to a movable integration table at one side of said web.

An integration table for use with calculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member, said web bearingintegrations arranged in series both longitudinally and transversely thereof, and referring to a plurality of independent stationary integration tables at one side of said web and to a movable integration table at one side of said web.

6. An integration table for use with calculating devices, comprising a web of flexible material adapted to be spooled upon a rotatable member. said web bearing intcgrations arranged in series both longitudinally and transversely thereof. and referring to a plnialitw of independent stationary integration tables at one side of said web. and lo a phirality of independent movable integration tables at one side of said web.

7. An integration table for use with calculating devices. comprising a web of flexible material adapted to be spooled upon a rotatable member, said web bearing integralions arranged in a series of pairs spaced both longitudinally and transversely thereof, and referring laterally to a plurality of different integrations not appearing on said web.

8. An integration table for use with calculating devices, comprising a Web of flexible material adapted to be spooled upon a 1'0- tatable member, said Web bearing integrations arranged longitudinally thereof in a 10 plurality of independent series, and referring both laterally and longitudinally to a plurality of difi'erent integrations not appearing on said Web.

JOHN E. WRIGHT. 

